[Question] Sizing 3D models correctly

Whats the blender default unit system?
In any somewhat good 3d app it should be cm (as it is with ue4). So in that case our ue4 mannequin is 180 units tall. If you want that for blender, just make sure the unit system is cm, then make your objects x units tall which will be equivalent to their height in cm.
Its so simple…